Radiant-heater attachment



Aug. 28, 1928.

G. L. DAVENPORT. JR

RADIANT HEATER ATTACHMENT Filed Aug. 1, 1927 INVENTOR George L,Davenparf/Z A TTORNEV Patented Aug. 28, 1928.

UNITED STATES GEORGE I... DAVENPORT, JR, or Los ANGELES, CALIFORNIA.

RADIANT-HEATER ATTACHMENT.

Application filed August 1, 1927. Serial No. 209,832.

My invention relates. to radiant electric or gas heaters for domesticuse, and it has for a purpose the provision of an attachment for heatersof this character by which the radiant heat generated therein isconverted into convected heat by causing air to be circulated by thermalaction through the interior and against the exterior of the attachment,thus heating the air more rapidly and thereby increasing the heatingcfiic-iency of the conventional radiant heater.

I will describe only one form of radiant heater attachment embodying myinvention and will then point out the novel features in claims.

In the accompanying drawing:

Fig. 1 is a view showing in side elevation one form of attachmentembodying my invention in applied position to an electric radiantheater;

Fig. 2 is aview showing the heater and attachment in top plan; and

Fig. 8 is a vertical sectional view taken on the line 33 of Fig. 1.

In carrying out my invention, the attachment may be of any suitabledesign to render it applicable to a gas or radiant heater of anyparticular form so long as it embodies the structural characteristicsnecessary to accomplish the conversion of radiant heat into convectedheat. a

My invcntion in its present embodiment is in the form of a cylindricalbody 15 of metal or other suitable material and of such diameter as torender it applicable to the concave side of a reflector of an electricalradiant heater. One end of the body 15 is closed by a wall 16, theopposite end of the body being open and detachably secured to thereflector R of the heater by means of clips 17 arranged atcircumferentially spaced intervals on the attachment body so as toengage the periphery of the reflector and. thereby secure the attachmentto the reflector in such position that its axis is centered with respectto the axis of the reflector.

As clearly illustrated in Fig. 3, the inner side of the wall 16 isprovided with a suitable baflie member 18 which. in the presentInstance, is cylindrical in form and positioned concentrically of thebody 15 so as to provide an interposing medium between a pair ofopenings 19 and 20 formed in the body 15 preferably at diametricallyopposed points. In the present instance the lower opening 19 is disposeddirectly below the teriorly and exteriorly. By reason of the openings 19and 20 the thermal action of the radiant heat causes atmospheric air tobe circulated through the interior and against the exterior of theattachment whereby a more rapid heating of the air is effected than ispossible by direct radiation. Thus, the heating efficiency of the heateris greatly increased.

By a consideration of Fig. 3 it will be evident that the battle 18distributes the incoming cool air uniformly over the entire interiorsurface of the attachment thereby effect ing a maximum conversion of theradiant heat into convected heat, the heated air escaping through theopening 20 to atmosphere. In this manner a constant circulation of coolair interiorly of the attachment is produced, and conversely avconsistent discharge of heated air from the attachment.

My invention renders more practicable the use of a radiant heater in asmall room, such as a bathroom, where concentrated reflected heat isimpractical and dangerous. In actual use my attachment provides aheating surface of relatively low temperature due to the constantlycirculating convection currents, the temperature being similar to thatof a steam radiator and thereby reducing fire risk and preventingburning or overheating of the air which results by direct contact withhighly heated surfaces, and which is objectionable from a sanitary andhealth standpoint.

Although I have herein shown and de scribed only one form of radiantheater attachment embodying my invention, it is to be understood thatvarious changes and modifications may be made herein without departingfrom the spirit of. the invention and the spirit and scope of theappended claims.

I claim:

1. An attachment for radiant heaters comprising a circular body closedat one end and open at the other, diametrically opposed openings in thebody adjacent the closed end thereof, and a circular battle in the bodyand concentrically spaced therefrom, said baflie being disposed betweensaid openings.

2. The combination With a radiant'heater employing a concavo-convexreflector, of an attachment therefor consisting of a cylindrical bodymember open at its rear portion and closed at its front portion, theopen rear portion having a diameter agreeing approximately with that ofthe reflector of the heater,

a cylindrical baflie extending from the closed frontportion of the bodymember and terminating in spaced relation to the said open at a pointbeneath the battle and an outlet 2 opening above the baiiie for theheated air, and means securing the body member to the reflector of theheater so as to closely relate the said open rear portion with theconcave of the reflector.

GEORGE L. DAVENPORT, JR.

